(19)

(11)

EP 0 847 621 A1

(12)

(43) Date of publication: 17.06.1998 Bulletin 1998/25 (21) Application number: 96929071.0 (22) Date of filing: 27.08.1996

(51) International Patent Classification (IPC):  H03G 3/ 30( . ) (86) International application number: PCT/US1996/013761 (87) International publication number: WO 1997/008825 (06.03.1997 Gazette 1997/11)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV SI (30) Priority: 30.08.1995 US 19950002943 (71) Applicant: MATSUSHITA COMMUNICATION INDUSTRIAL CORPORATION OF AMERICA Peachtree City, GA 30269 (US)	(72) Inventor: STONE, Richard, M. Suwanee, GA 30174 (US) (74) Representative: Dealtry, Brian  Eric Potter Clarkson, Park View House, 58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)